Wrench



(No Model.)

A. MQNALLY.

WEE-NOE.

Pa t ented Apr. 20', 1886.

Witwwow new @%@M N. PETERS. Photo WINIIM D. C.

To all whom it may concern:

PATENT, tr es.

AUSTIN MCNALLY, OF CASCADE, IOIVA.

WRENCH.

EEPECIPICATION forming part of Letters Patent No. 340,233, dated April 20, 1886.

Application filed February 15, 1886. Serial No. 192,039. (No model.)

Be it known that I, AUSTIN MoNALLY, a citizen of the United States, residing at Oascade, in the countyof Dubuque and State of Iowa, have invented certain new and useful Improvements in lVrenehes; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to theletters and figures of reference marked thereon, which form a part of this specification,

My invention relates to nut-wrenches; and

it consists in the details of construction and novel combination of parts more fullyhereinafter set forth, claimed, and shown in the accompanying drawings, in which- Figure 1 is a perspective view of a wrench constructed in accordance with my invention. Fig. 2 is a side View of the same, partly in section. Fig. 3 is a perspective detail view of the pivoted and sliding jaws.

The stock A is of the usual form in crosssection, and is provided with a handle, B, and ferrule C at the junction of the handle and stock.

The jaw D has an opening, (1, formed longitudinally therethrough for the reception of the head of the stock, which is secured therein by a pivot, d. The opening is of suflicient size to permit of a slight vibratory motion of the jaw, for the purpose presently set forth. \Vings D extend from thejaw D on each side of the stock and terminate close to the ferrule. These wings are slightly wider than the stock and are of a uniform width throughout their length. A clip, E, uniting the lower ends of the wings, is provided a with socket, E, on one side and a cam-lever, F, on the other or opposite side, which lever is pivoted between the ends of the clip, and of a width to bear on the upper side of the stock.

The sliding jaw G is held in place on the wings of the pivoted jaw by hooks II. This jaw has a movement to and from the jaw D on the wings D, which form guides, and a second movement to and from the stock as the jaw D is vibrated about its pivot. The jaw G has an extension, G, which rests on the edges of the wings. Teeth g on the face of the extension G, adjacent the stock, are adapted to engage a tooth or teeth, a, on the under side of the stock, thereby preventing the further movement of the sliding jaw during the contacting of the teeth on the two parts.

The cam-lever, when thrown in'the position shown by full lines, Figs. 1 and 2, draws the jaw G into closer relationship with the stock, thereby causing an engagement of the teeth on the jaw and stock, as will be readily unseated in said bore, extends to and finds aseat 7 for its protruding end in the socket E. A bolt, J, havingits head resting in said socket, passes through the spring and projects part way onto the bore 9 of the jaw G when the latter is closed, as shown more clearly in Fig.-

2. The spring rests on the head of the bolt and prevents the latter from becoming displaced.

The spring always exerts a force to keep the jaws closed; hence when the jaw G is disengaged from the stock by the. cam-lever said spring will carry the jaw up against the jaw l),

The cam-lever, when it occupies a position at nearly right angles to the stock, locks the jaw in place, and to prevent the lever from turning too far wings f, projecting beyond the ends of the clip E, engage the sides of the same, which form a stop to limit its further movement.

In practice it will be observed that the device may be used as a self adjusting ratchetwrench by throwing the lever .in the, position. indicated by dotted lines, Fig. 2, and full lines, Fig. 3, or by dispensing with it altogether. In this case the jaw D is free to vibrate on its pivotal connection with the stock, thereby engaging and disengaging the locking-teeth between the longitudinal moving jaw G and the stock A. \Vhen thus disengaged the spring I forces the jaw G up close to thejaw D.

The above conditionsbeing borne in mind,

the following operation will be readily unstock, a clip uniting the lower ends of" the derstood. The wrench being adjusted to any desired nut, a backward movement of the handle will disengage the interlocking teeth between the jaw G and the stock, and a continued backward movement will cause the jaws to separate and ride the edges of the nut,

which, having been passed over the spring I, will cause the jaw G to advance and come close against the sides of the nut, the handle being now moved forward or in a reverse direction, the teeth between the jaw G and stock will interlock and cause the nut to follow its movement.

Having thus described my invention, what wings, a cam pivoted between the ends of the clip to limit the movement of the pivoted jaw, U

and a jaw held to the wings and'free to have a longitudinal movement thereon, and having teeth to interlock with the stock, substantially as and for the purpose specified.

3. The combination of the jaw pivoted to the head of the stock and provided with wings adapted to rest against the sides of said stock, a clip uniting the lower ends of the wingsand provided with a socket on its under side, a cam pivoted between its upper ends, a jaw secured to and free to slide on the wings of the pivoted jaw and having a longitudinal bore formed therein, a bolt resting in the socket of the clip and projected part way within the bore of the sliding jaw, and a spring seated in said bore and socket and surrounding the bolt, sub stantially as described. I

In testimony whereof I afiix nlysiguature in presence of two witnesses.

, AUSTIN MONALLY.

\Vitnesses:

J AMES MooRE, JAS. A. HAYES. 

